Rotary pump.



C. W. 61 M. M. JACKIVIAN.

ROTARY PUMP.

APPLICATION FILED JUNE 12. 1916- 1 26 9 2&8 a Patented June 4, 1918' 2 SHEETS-SHEET l- C.-W. & M. M. JACKMAN.

ROTARY PUMP.

APPLICATION FILED JUNE 12. 1916.

LQE QQE, Patented June 4, 1918;

2 SHEETS-SHEET 2- o if 5 a (18%, x

' CHARLES w. JACKMAN AND MILES M. JACKMAN, F WATERLOO, INDIANA.

ROTARY PUMP.

Specification .of Letters Patent.

Patented June 4t, 1918.

Applic 'wi filed June 12, 1916. Serial No. 103,200.

a To all whom it may concern:

Be it known that we, CHARLES W1 JACK- MAN and MILES M. JACKMAN, citizens of the United States, residing at Waterloo, in the county of Dekali-. and State of Indiana, have invented certain new and useful Improvements in Rotary Pumps, of which the following is a specification.

he present invention relates to pumps andmore particularly to rotary pumps of the radial flow type.

An object of our invention is to provide a rotary pump in which water or other pro- .pelled fluid is received at the axis of the rotor and flows radial y to be propelled in a given direction. I A r Object of our inventhonis to provide a rotary pump which is reversible without the necessity of throwing clutches or altering any of the relations of the mechanical parts of the device.

A further object of our invention is to provide a rotary pump of the class above described employing rotary abutments for coaction with the plstons of the rotor, suitable gearing being provided which remains unchanged through the operation of the pump in either direction.

Other objects and advantages to be'derived from the use of our invention Will appear from the following detail description and the claims, taken with an inspection of the accompanying'drawings in which:

Figure 1 is a side elevatiion of a pump embodying the improvements of our invention; Fig. 2 is a vertical transverse sectional view-taken on the line 2-2 of Fig, 1, looking in direction of the arrow;

Fig. 3 is a longitudinal vertical sectional pump stator; I

Fig. 4 is a longitudinal sectional view taken on the line 44 of Fig. 3 looking in direction of the arrow.

; -Referring more particularly to the drawfiings, wherein similar characters of reference designate like and corresponding :parts throughout the various views, 1 designates in its entirety the casing or stator having a base portion 2 and a rotor recei ing or stator 1 is preferably water chamber 3. The stator is provided with a pa ir of semi-cylindrical enlargements 4 and 5 on its peripheral Wall 6 for a purpose which will hereinafter appear. The

formed in two detachable sections, lugs a and 5' being formed on the enlargements 1 and 5 for the purpose of detachably connecting the two sections of the stator. Suitable packing material may be provided (not shown) to prevent the escape of the propelled fluid.

The rotor of our invention embodies pre1- erably a drum like body 1' provided with a central diametrically extending tube or the like 8 divided by a longitudinally extending partition 9 twisted at the points 10 .and 11' adjacent its extrem ities to form pistons 12 and 13. The partition 9 forms a pair of conveying ducts 1-1 and 15 opening, respec tively, in the direction of rotation 1n front of and behind the pistons 12 and 13, as best shown in Fig. 3. In the present instance the duct 14 forms the inlet duct, flu id entering through an axially located opening 16 communicating with a fluid supply pipe 17 through an opening 18 formed in an enlargement 19 cast integrally \vitht-he stator body, as best shown in Fig. 2. The outlet duct 15 connnunicates with an axially arranged opening 20 in the opposite side wall 21 of the rotor 7, said opening 20 communicating with an exhaust or outlet pipe 22 by means of an opening 23 formed in an enlargement 24 arranged similarly to the enlargement 19. In order to form bearings for the rotor 7 lateral annular extensions 25 are formed on the side walls of said rotor for reception in complementally formed recesses. As best shown in Fig. 2 the side wall 21 of the rotor view taken on the long1tudinal was of the a bodying substantially semi-cylindr ical mem-' bers 27 and 28, the peripheral Walls of said members being provided with inwardly extending cylindrical portions 29 and 30 forming recesses 31 and 32 adapted to alternately receive and accommodate the pistons 12 and 13 as the same revolve. The end portions of the abutments 27 and 28 are provided with stub shafts 33 journaled in suitable openings in the side walls of the stator 1. The abutments 27-and 28 are adapted to be rotated simultaneously with the rotor 7 and so relatively thereto that as the pistons 12 and 13 pass said abutments the recesses 31 and 32 will be presented to receive said pistons and move therewith to allow passage of the latter therefrom. In order to accomplish this the abutments 27 and 28 are provided with gear teeth 3% which are adapted to mesh with the gear teeth 26 formed on the rotor.

In order to prevent the escape of fluid when the pistons are in the neutral position as best shown in Figs. 3 and 4 we provide tongues or extensions 35 on the rotor 7 above and below the pistons 13 and extending radially from said rotor, said extensions 35 being arranged to engage the edges of the abutments 27 and 28 to close any opening which might be formed at this point in operation.

Power is given to the rotor by means of a shaft 58 integrally formed therewith and having a pulley 39 on one end. If desired the shaft 38 may terminate at the partition 9 instead of passing across the entire width of the stator casing. However, as shown the shaft tends to stabilize the rotor directing operation.

In operating water or some such propelled fluid is admitted through the pipe 17 and the opening 16 into the inlet duct 14. Assuming the pump is in the position as in Fig. 3 the iiuid now passes out through both ends of the duct 14 and against the pistons 12 and 13 and the abutments. The motor is revolved in a clockwise direction. After a half revolution has been completed the pump chamber will be full of fluid admitted behind the pistons 12 and '13 which during the next half revolution will be conveyed through the duct 15 which opens in front of the pistons 12 and 13 and thence outwardly through the exhaust pipe 22, while at. the same time fluid will be admittedbehind the pistons as before. The continual meshing of the gear teeth 26 and 34"will rotate the abutinents in orderto bring the recessed portions thereof into position to receive the pistons at each half revolution. It will be clear that the direction of rotation of the rotor may be reversed by'inerely reversing the direction of thedriving pulley, that is, by employing the outlet pipe 22 as the inlet pipe, and the pi pc 17 as the outlet pipe. The simplicity of structure of our invention obviate's the necessity of levers and the like for shifting the abutments, and it Will be noted that the rotor,

providing complicated controlling inlet and outlet ducts, shaft, and pistons are all cast integrally forming a compact and durable structure. It will be noted that the parts of the invention may be readily as scmbled, the two halves of the stator casing being separated and the motor placed in operative position. B y returning the upper half of the stator casing to the position shown in the drawings and placing the fastening bolts in position the device is ready for use. \Ve desire to lay particular stress upon the fact that the device of our invention, owing to its simplicity of construction, may be readily adapted for use as a fluid motor, without structural alteration.

From the above description taken connection with the accompanying drawings, it is thought that a clear and comprehensive understanding ofthe construction, operation and advantages of our invention may be had, and while we have shown and de scribed our invention as embodying a spe cific structure, we desire that it be understood that we may make such changes onsaid structure as do not depart from the spirit and scope of the invention as claimed.

What we claim as new and deslre to secure by Letters-Patent is l. The combination of a rotary pump having a rotor provided with pistons and oppositely extending radial ducts spirally twisted to present oppositely directed openings on each side of said pistons, a plurality of rotatable abutments having recesses adapted to be positioned at times to receive the pistons for the purpose set forth.

2. The combination with a stator casing having a plurality of rotatableabutments therein, of a rotor intergeared with said abutments and comprising a drum like body having a tube extendmg diametrically therethrough, a partition in said tube being twisted adjacent its free extremities to pro vide radially extending pistons, said partition forming inlet and outlet ducts oppositely arranged alternately, and inlet and outlet pipes communicating with said inlet and outlet ducts.

3. In a rotary pump the combination with a stator casing formed in two detachable sections provided with complementally arranged enlargements, rotatable abutments receivable in said enlargements, said abutments having recesses, of a rotor mounted in said casing of drum like form having a ing the same peripherally thereof during rotary motion and gear teeth on said rotor and said abutments whereby to transmit movement trom said rotor to said abutments in ordefto cause the latter to co-act with said partition forming outlet and inlet ducts said. pistons when said rotor is operating. on opposite sides of the pistons, and revolv- W 4 4. In a rotary pump the combination of a ing abutments in the stator cooperating with stator, a rotor operable therein having a said pistons. 5 radially extending tube therethrough, a par- In testimony whereof we 2% our signatition, extending through said tube and; tux-es.

' :acent its ends, the extremities of CHARLES W. JAGKMAN,

twisted 241% parti' ion forming projecting pistons, MILES M. JACKMAN. 

